package day4.Exer;

public class Dogtest {
    public static void main(String[] args) {
        Person a=new Person("吕洞宾","男");
        Hedgehog b=new Hedgehog();
        Dog c=new Dog();
        Dog d=new Dog();
        c.bite(a);
        c.bite(b);
        c.bite(d);
    }
}
